16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface

16-Bit, 2.5-MSPS, 15.5-mW, SAR ADC With multiSPI™ Interface - ADS9120


The ADS9120 is a 16-bit, 2.5-MSPS, successive approximation register (SAR) analog-to-digital converter (ADC) with enhanced performance features. The high throughput enables developers to oversample the input signal to improve dynamic range and accuracy of the measurement. The ADS9110 is a pin-compatible, 18-bit, 2-MSPS variant of the ADS9120.

The ADS9120 boosts analog performance while maintaining high-resolution data transfer by using TI’s enhanced SPI feature. Enhanced SPI enables the ADS9120 to achieve high throughput at lower clock speeds, thereby simplifying board layout and lowering system cost.

Enhanced SPI also simplifies the host clocking-in of data, thereby making the device ideal for applications involving FPGAs and DSPs. The ADS9120 is compatible with a standard SPI Interface. The ADS9120 has an internal data parity feature that can be appended to the ADC data output. ADC data validation by the host, using parity bits, improves system reliability.

The device supports JESD8-7A compliant I/Os, the extended industrial temperature range, and is offered in a space-saving, 4-mm × 4-mm, VQFN package.


  • Sample Rate: 2.5 MSPS
  • No Latency Output
  • Excellent DC and AC Performance:
    • INL: ±0.25 LSB
    • DNL: ±0.6 LSB
    • SNR: 96 dB, THD: –118 dB
  • Wide Input Range:
    • Unipolar Differential Input Range: ±VREF
    • VREF Input Range: 2.5 V to 5 V,
      Independent of AVDD
  • Low-Power Dissipation:
    • 9 mW at 2.5 MSPS (AVDD Only)
    • 15.5 mW at 2.5 MSPS (Total)
    • Flexible Low-Power Modes Enable Power Scaling with Throughput
  • Enhanced-SPI (multiSPI™) Digital Interface
  • JESD8-7A-Compliant Digital I/O at 1.8-V DVDD
  • Fully-Specified Over Extended Temperature Range: –40°C to +125°C
  • Small Footprint: 4-mm × 4-mm VQFN

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

Resolution (Bits)
Sample Rate (Max) (kSPS)
# Input Channels
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Power Consumption (Typ) (mW)
Package Size: mm2:W x L (PKG)
Input Type
Multi-Channel Configuration
Reference Mode
Input Range (Max) (V)
Input Range (Min) (V)
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Digital Supply (Min) (V)
Digital Supply (Max) (V)
INL (Max) (+/-LSB)
SNR (dB)
THD (Typ) (dB)
Sample Rate (Max) (MSPS)
ADS9120 ADS9110
16    18   
2500    2000   
1    1   
SPI    SPI   
-40 to 125    -40 to 85   
9.95 | 1ku    13.95 | 1ku   
15    15   
24VQFN: 16 mm2: 4 x 4(VQFN)    24VQFN: 16 mm2: 4 x 4(VQFN)   
SAR    SAR   
Differential    Differential   
N/A    N/A   
Ext    Ext   
5    5   
-5    -5   
1.65    1.65   
1.95    1.95   
1.65    1.65   
1.95    1.95   
0.6    1.5   
96    99.9   
96    100   
-118    -118   
2.5    2   

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